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Patented Nov. I, I898.

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J. W. 8|. F. C. LILLEY.

. STOVE 0B FURNACE.

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No. 613,379. Paientod Nov. I898.

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STOVE 0R FURNACE.

(Application filed Feb. 8, 1897.)

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UNITED STATES- PATENT OFFICE. T

JOHN W. LILLEY AND FRED O. LILLEY, OF BAINBRIDGE, NEW YORK.

STOVE oR FURNACE.

SPECIFICATION forming part of Letters Patent No. 613,379, dated November 1, 1898. Application filed February 8, 1897.; 591ia1VNl5-622r535- (N0 modem To all whom, it may concern.-

Be it known that we, JOHN W. LILLEY and FRED O. LILLEY, citizens of the United States, residing at Bainbridge, in the county of Chenango and State of New York, have invented a new and useful Stove or Furnace, of which the following is a specification.

This invention relates to that class of heatersusing wood as fuel and which comprise concentric shells inclosing between them an air-space for heating the air circulating therethrough for warming the apartment or room in which the heater is located or for heating a distant room or place, whether the heater be a stove or furnace.

The improvement resides in the special means for controlling the draft to the fire and regulating the escape of the gases and products of combustion and in the special arrangement of the parts whereby cold air is more ad: vantageously heated and a greater percentage of the heat converted into form for available use in effectively heating the room containing the stove or the remote apartment.

For a full understanding of the merits and advantages of the invention reference is to be had to the accompanying drawings and the following description.

The improvement is susceptible of various changes in the form proportion, and the minor details of construction without departing from the principle or sacrificing any of the advantages thereof, and to a full disclosure of the invention an adaptation thereof is shown in the accompanying drawings, in which- Figure 1 is a perspective view of a heater constructed in accordance with this invention. Fig. 2 is a top plan view thereof, the cover being omitted. Fig. 3 is a view of the heater inverted. Fig. 4 is a central vertical longitudinal section of the heater. Fig. 5 is a plan section on the line X X of Fig. 4:. Fig. 6 is a detail view in perspective of the support between the bottoms of the inner and outer shells or casings.

Corresponding and like parts are referred to in the following description and indicated in the several views of the accompanying drawings by the. same reference characters.

The outer shell 1 is mounted upon feet 2 and is supplied with a fender 3, connected thereto by arms 4, and its bottom 5 is formed vents the burning out of the heater.

with a series of openings 6 for the admission of cold air to be heated in its passage through the shell. A ring 7 is fitted to the upper end of the shell or casing 1 and has a collar 8, to which a pipe may be fitted for conveying hot air to a distant room or apartment for warming the same. Damper-controlled openings 9 are formed in the ring 7 at opposite sides of the collar 8 for the escape of the hot air into the room containing the heater.

The inner shell or casing 10 is smaller than the outercasing to provide a hot-air space between it and the outer casing and is supported a proper distance above the bottom ,5 to receive an ash-pan 11 and a rest or support 12. The inner shell is elliptical in plan section and touches the sides of the outer shell at diametrically opposite points, whereby the hot-air space formed between the two. shells is divided, as clearly indicated in Fig. 5. The upper portion of the shell 10 is contracted and passes through the ring 7 and is closed by means of a cover 13, provided with an urn or other ornament 14, serving as a handle and an embellishment to the cover. In order to prevent the urn or ornament from tarnishing by being overheated, the cover has a plate at its lower end and intermediate of its ends, and these plates are lined on their upper sides by asbestos or other non-heat-conducting material, so as to prevent the excessive heating of the part 14. The shell 10 forms the firebox and combustion-chamber, and its lower portion is protected by a lining 15, which. pre- An airpassage 16 is provided at one side of the shell 10 and communicates at its lower end therewith, as shown at 17, and its upper end terminates in acollar 18, which extends through the shell 1 and issupplied wit-h a damper 19, by means of which the draft or admission of air for supporting combustion is regulated. This air-passage 16 is formed and located in the hot-air space provided between the two shells, whereby the air is heated prior to its admission into the fire-box.

The smoke-pipe 20 connects at its lower end with a pipe 21, located in the space formed between the two shells, and has connection with the upper portion of the shell 10 by means of a short pipe -22, the pipe 21 likewise communicating with the pipe 22. A damper 23 is provided at the juncture of the pipe 21 and the pipe 20, and a damper 24 is provided in the pipe 22 at a point between the pipes 20 and 21. By closing the damper 23 and opening the damper 24: the smoke and gases are enabled to pass directly from the heater into the smoke-pipe 20, and by closing the damper 24 and opening the damper 23 the products of combustion are compelled to take a downward course through the pipe 21, thence upward through the lower portion of the smokepipe 20, whereby an increased radiating-surface is had. The downwardly extending smoke-pipe 21, which is located beneath the air-outlet, serves to heat the air within the rear air-space and cause air from the inletopenings to flow under the inner shell into the said rear air-space. A protected opening 25 is had in the smoke-pipe 20 a short distance above the pipe 22, which is controlled by a slide 26, operating in a guide 27, applied to the pipe 20 opposite the protected opening 25. By a proper manipulation of the slide 26 the opening 25 maybe uncovered more or less, thereby enabling the draft through the smoke-pipe 20 to be controlled and obviating the formation of creosote. The opening 25 is protected by wire-gauze, which prevents the escape of sparks into the room.

The support or rest 12, located between the bottoms of the inner and outer shells, is of rectangular form and incloses and provides an ash-pit which receives the ash-pan 11, the latter being removably inserted into the ashpit through an opening in the side of the outer shell near its bottom and which opening is closed by means of a door 29. An opening 30 is provided in the bottom 31 of the inner shell for the escape of ashes into the ash-pan, and this opening is closed by a door 32, having a rod 33 secured thereto and extending through the ash-pit and within convenient reach of the door 29, so that upon opening the door 29 the rod 33 can be grasped and operated so as to move the part 32 to uncover or close the opening 30, as required.

The wood or kindred fuel is supplied to the heater through the contracted or neck portion of the inner shell, and afterbeingignited combustion is supported by the proper admission of air through the passage 16, the draft being controlled by means of the damper 19. \Vhen starting the fire or desiring to make the same burn more briskly, the damper 2* is opened, thereby securing a direct escape for the products of combustion; but when the fire has sufliciently burned and it is required to increase the heat-radiatingsurface the damper 24 is closed and the damper 23 opened, thereby compelling the gases to pass through the pipe 21 and the lower portion of the pipe 20. The cold air entering the hot-air space formed between the inner and outer shells through the openings 6 is heated in its passage through the said space and escapes into the room through the damper-controlled openings 9 or may be conveyed to a remote room by means of a pipe applied to the collar Sin the ordinary manner, as will be readily understood.

Having thus described the invention, what is claimed as new is- 1. In a heater comprising inner and outer shells having a hot-air space formed between them, a frame interposed between the bot toms of the two shells and forming an ashpit, and a door closing an opening in the bot tom of the inner shell and adapted to be operated through the ash-pit, substantially as and for the purpose set forth.

2. The herein-described heater, comprising an inner and an outer shell having a hot-air space formed between them, a frame interposed between the bottoms of the inner and outer shells to support the inner shell and forming an ash-pit, a door closing an opening in the bottom of the inner shell and adapted to be operated through the ash-pit, an ash-pan removably fitted within the said frame, and a door closing the open side of the frame through which the ash-pan slides, substantially as set forth.

3. A heater comprising an outer shell of substantially circular outline, an inner elliptical shell touching the outer shell at opposite points and forming front and rear hotair spaces, and separated at its top and bottom from the outer shell to form top and bottom air-spaces communicating with the front and rear air-spaces, said outer shell being provided at the bottom of the front air-space with an air-inlet, and having an air-outlet located at the top of the rear air-space, and the downwardly-extending smoke-pipe 21 arranged in the rear air-space and located beneath the air outlet, said smoke-pipe 21 communicating with the inner shell near the top thereof and extending through the outershell near the bottom and adapted to heat the air in the rear air-space, whereby air from the inlet is caused to flow under the inner shell to the rear air-space, substantially as described.

In testimony that we claim the foregoing as our own we have hereto a'liixed our signatures in the presence of two witnesses.

JOHN W. LILLEY. FRED C. LILLEY.

Witnesses:

LEBUT B. HOLLENBECK, BENJAMIN D. LILLEY. 

